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Finding the Fourth Proportional to 139,662.12, 192,732.10 and 75,998.82

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Solution

The fourth proportional to 139,662.12, 192,732.10 and 75,998.82 is: 104,877.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,662.12 : 192,732.10 = 75,998.82 : x
  2. Step 2: Convert to fraction form
    139,662.12/192,732.10 = 75,998.82/x
  3. Step 3: Cross multiply
    139,662.12x = 192,732.10 × 75,998.82
  4. Step 4: Simplify right side
    139,662.12x = 14,647,412,176.12
  5. Step 5: Solve for x
    x = 14,647,412,176.12/139,662.12
  6. Step 6: Final answer
    x = 104,877.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.